Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
77 + 20 = ______
92 − 10 = ______
87 + 20 = ______
40 + 10 = ______
99 − 10 = ______
8 × 10 = ______
4 × 10 = ______
98 − 10 = ______
61 + 20 = ______
38 + 20 = ______
22 − 10 = ______
39 − 10 = ______
45 + 10 = ______
36 − 10 = ______
1 × 10 = ______
47 + 20 = ______
28 + 10 = ______
62 − 10 = ______
36 + 10 = ______
85 + 10 = ______
